Counterbalancing device.



Patented Jan. 20, 1914.

2 SHEETS-SHEET 1.

flvvenarx' 32117101 070 0)? 7 EfHenrzIkson COUNTERBALANOING DEVICE. A'BPLIGATION FILED FEB.'24, 1912 1 B. M. W. HANSONK: E. HENRIKSON.

' mess-e8;

To all whom it may-concern:

rrnn'r OFFICE.

BENGT M. 'W.,HANSON AND EMANUEL HENRIKSON, OF HARTFORD, CONNECTICUT.

COUNTERBALANCING DEVICE.

Specification of Letters Patent. Pateirbed Jail; 20, 191 4.

Application filed February 24, 1912, Serial No. 679,640.

Be it known that We, BENGT M. W. HAN- soN and EMANUEL HENnmsoN, citizens of the United States, residing at Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Counterbalancing Devices, of which the following is a specification.

This invention relates to counterbalancing devices, the object of the invention being to provide a simple and effective appliance of this character which can be employed with advantage in many different connections for instance in conjunction with or as part of a metal working machine, the coiinterbalancing device in the present case being represented as incorporated in a side head boring mill.

In the drawings accompanying and forming part of the present specification we have illustrated in detail one of the several forms of embodiment of'the invention, which to enable those skilled in the art to practise the same will be set forth fully in the following description, while" the novelty of the invention will be included-in the-claims succeeding said description. From this statement it will be clear that we do not restrict ourselves to such disclosure; We may depart therefrom 'in several respects within the scope of the invention covered in theclaims following said description.

Referring to said drawingsz' Figure 1 is a sectional side elevation of the cross rail of, a side head boringnnill with the slide mechanism and associated parts carried thereby.

Fig. 2 is a sectional front view of the parts shown in the preceding figure.

Fig. 4 is a sectional detail of worm gearing hereinafter more particularly described, and, Fig. 5 is a view of a modified detail of the invention.

Like characters refer to like parts throughout the several figures of the drawings.

As already indicated a counterbalaneing device involving our invention, can be uti- 6 lized invarious ways, for example and as shown .in the accompanying drawings for counterbalancin the turret and associated parts of a side head boring mill which machine comprises in its organization a cross rail as 5. The cross rail 5 supports for slid ing movement the cross slide 6 which in the present case moves in ahorizontal direction.

Fig. 3 is a. horizontal section on the line 83 of Fig. 2.'

The turret-slide 7 is adapted for vertical movement, although as will hereinafter ap-' pear it may also be angularly adjusted.

b The turret carried by the slide 7 is denoted y 8. a

The cross slide 6 is provided with what we term aswivel or pivotally mounted member 9 which in the present instance r0 f .tates about a horizontal axis and which is provided with ways for receiving and guidmg the turret slide 7. It will bevclear that through the operation of the swivel 9, the turret slide 7 may be adjusted so as to be operated either vertically or at an angle to the vertical. In the construction shown the swivel 9 is provided at its center with a rearwardly extending hub or'hollow journal 10 which is supported in an approximately central opening in the body of the slide (3.

of the slide 6, and it will be apparent that by rotating the shaft 13 the swivel 9 can be operated to effect the necessary angular adjustment of the turret slide 7.

Various means may be provided for operating the turret slide-7, although rack and )inion mechanism is advanta eous in this connection, the slide 7 being shown provided witha rack denoted in a general way by 15 in mesh with a pinion 16 fastened to the shaft 17 which has a bearing in the hub 10 and which also has fastened thereto a gear as 18 shown as being of worm type and in 10% mesh with the worm 19 slidably keyed to the shaft 20 supported by suitable bearings in the chamber '21 of the cross rail 5. By

turning the shaft 20 either by hand or me- I chanically the pinion 16 through the intermediate parts will be rotated to either raise or lower the turretslide 7, and on such mo tion of said slide it may, travel vertically or at an angle to the vertical, this depending upon the particular adjustment of the sw1vel'9.

We provide as already. md eated a rack and pinion for efiecting the longitudinal adjustment of the turret-slide 7, and one of the gear elements is preferably in sections and one section of said sectional elementis prefin sections comprising a relatively fixed member 22 and a yieldingly mounted me1nber 23, the two parts being arranged side by side. The part 22 is connected in some suitable manner with the slide 7 as for instance by screws 24. The section 23 of the rack is connected with the companion section 22 for relative movement and in the construction shown screws as 25 may be provided for this purpose, said screws being tapped into the rack section 22 and extending through longitudinal slots 26 in the cooperating section 23, by virtue of which the latter can move longitudinally with respect to its mate. The slide 7 back of the rack 23 is shown provided with a projection or lug 27 in which is tapped a screw 28 and around the screw is fitted a sleeve 29, the head of the rack 23 being slightly cut away as at 30 to. receive the sleeve. aid sleeve is shown inclosing a coiled spring 31, one end of which bears against the bottom of the sleeve 29, while the other end thereof bears against the head of the screw. The bottom of the cut away portion orrecess 30 supports and acts as a stop for the sleeve'29. The spring 31 is of push type and therefore through the sleeve constantly exerts a downward pressure or thrust upon the movable section 23 of the rack to thereby hold the teeth thereof solidly against the pinion 16.

Rotative with the shaft 17 is the drum 32 which in the construction shown is peripherally grooved and in connection with this drum 32 is a band which may as shown consist of a cable, denoted in a general way by 33 which cable is, however, not ofvendless type. One end of the cable is connected as at 34 with the drum, while the other end thereof is connected with said drum as at 35, the points of connection in the present case being approximately diametrically opposite, although this is not essential. The portion 36 of the cable 33 from its point of connection 34 extends from the drum' 32 in a direction opposite to the portion 37 and around the guidesheave 38, the two portions 36 and 37 passing around coaxial guide sheaves 39 and 40 and 41 and 42 respectively supported by suitable hearings or arms onithe cross rail 5. The two portions of the cable are connectedto present a loop 43 which receives the sheave 44 rotatively supported by arms on the upper side of the counterweight 45 which is of a mass sufiicient to counterbalance the turret 8, its supporting slide 7 and the parts which move :therewith. It

will be seen that owing to the manner in scription that we support a weight for relatively sliding movement in the bight of a loop consisting of aband, the ends of which are connected, with a. sheave, and in Fig. 2 is shown one way of supporting and guiding the band. for this purpose. In this figure is the cross rail carried by the column 5' which column is not shown in Fig. 2. In this construction the primary guide sheaves 39 and 41" or the band 33' are carried by the cross rail 5, but the secondary guide sheaves 40 and 42 are carried by a bearing or bracket on the column or framing 5' of the machine, and owing'to this mounting the eiiects of the counterbalance 45 is applied to the cross rail 5 in the vertical adjustments thereof and in addition to this the maximum eil ect of said weight as a counterbalance or the turret and its adjustments is also assured.

It will be seen that the turret slide 6 is equipped with the customary nut 51 engageable by the screw 52 for adjusting said slide transversely of the column or the equivalent of the machine, such movement being in the present instance longitudinally of the cross rail 5. I

What we claim isi v 1. The combination of a-slide, means for adjusting said slide in opposite directions, a drum rotated by the slide adjusting mechanism, a band in the form of a loop having portions connected with said drum and extending oppositely therefrom, a counterweight supported by the loop ot the band, and guiding means for the band, between the weight and drum.

2. The'combination of a horizontally movable slide, a vertically movable slide supported by said horizontally movable slide, means for raising and lowering said vertically movable slide, a drum rotated by said slide raising and lowering mechanism, a

band in the form of a loop, having portions When the turret slide 7 is low- In Fig. 5 another means isshown oppositedirections, a drum rotated by said 3 aft, a band in the form of a loop, having portions connected with said drum and extending oppositely therefrom, a counterweight supported by the loop of the band, and guiding means for the band, between the weight and drum. I

4. The combination of a slide, a rotary shaft, means operable by said shaft for adjusting said slide, a drum rotated by said shaft, alooped band having portions connected circumferentially to the drum and extending oppositely therefrom, a wei ht supported by the loop of the band, an means or supporting and guiding the band between the weight and the drum. Y

' 5.'The combination ofa pair of slides movable in transverse directions, a counterbalancing weight and means whereby the effect of said weight is applied to one of the slides and whereby the other of the slides can be moved without changing the position of the weight.

6. The combination of a slide, mechanism includin a rotary member, for adjusting said sli e, a oounterbalancmg weight for said slide, and mechanism fortransferring I Witnesses:

the efiect of said weight to said slide and for applying equal rotating effects to said rotary member.

7. The combination of a slide, a ra'ckcon- 8. The combination of a slide, a rotar shaft, means for connecting said rotary sha t with said slide for adjusting the latter, a drum fastened to said shaft for rotationtherewith, a counterbalancing weight for the slide, and means for connecting said weight with said drum to counterbalance the slide and for also applying rotating effects to said drum. v

In testimony whereof we aifix our signatures in presence of two Witnesses.

' BENGT M. W. HANSON.

EMANUEL HENRIKSON.

W. M. Screens.

F. E. ANDERSON. 

